I was childishly pleased with my cardboard heroes, despite some of art not being quite to my taste. It would have been better to have the same art style that we see on the covers (because it's just plain awesome). That being said, I loved having cardboard heroes and bases included in the set. However, it only wet my appetite so to speak; I now want a box full of 'em!

I would love to see SJG put out boxed sets of cardboard heroes/monsters (with new superior art) and hex bases, similar to what Pathfinder does with their bestiary and codex boxed pawn sets.

I was childishly pleased with my cardboard heroes, despite some of art not being quite to my taste. It would have been better to have the same art style that we see on the covers (because it's just plain awesome). That being said, I loved having cardboard heroes and bases included in the set. However, it only wet my appetite so to speak; I now want a box full of 'em!

I would love to see SJG put out boxed sets of cardboard heroes/monsters (with new superior art) and hex bases, similar to what Pathfinder does with their bestiary and codex boxed pawn sets.

I feel like a Monsters book with cardboards for all monsters would be awesome, and could encourage buying physical stuff, which could be very FLGS-friendly.

That could be good. And a related idea would be a Monster Deck.
Imagine a deck of cards with the back a picture of the monster so you can show players (and find the right one quickly regardless of stacking) and the other side has the monsters STAT block and notes.
Make the Art good enough and at least a few generic monsters and you could have people buying them for other games as well.
Those extra sales would also be advertising.

A monster deck could be used at the table or with a camera or scanner online as well.

I feel like a Monsters book with cardboards for all monsters would be awesome, and could encourage buying physical stuff, which could be very FLGS-friendly.

Yeah. This wouldn't be too tough to pitch to folks not in our ecosystem either. For example, I have the Pathfinder Bestiary Box and absolutely no other Pathfinder products.

This could be easily expanded as well. It wouldn't be too hard to amass monsters from freelancers (I have about 30 ready to be go and in publication format, actually, though about half of them still need someone to look at them; I assume Peter Dell'Orto and Christopher Rice are in similar situations), back issues of Pyramid, and other GURPS Dungeon Fantasy products. From these, you can make a Dungeon Fantasy Monsters supplement or two. Plus, many of these already have Cardboard Heroes from the Eighties (a couple in my pile are actually engineered to match existing Cardboard Heroes; GURPS Dungeon Fantasy Monsters 3: Born of Myth & Magic also has many monsters that match up with Cardboard Heroes), which would speed up production.

Thick cardboard heroes for use with bases are great. One big advantage is that they travel better than ones assembled into T or A shapes. You can stack a lot of flat cardboard heroes into a craft box, or into a binder with pocket inserts, whereas the empty space needed by assembled heroes means they eat up a lot of storage and transportation space.